<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    let age = 20

    let obj = {
      uname: 'zs',
      age: 18,
      address: '成都'
    }

    let {age: nianling, address, uname} = obj

    console.log(age, nianling,  address)
    console.log(uname)
  </script>
</body>
</html>